Home / 12,400.25-17,112.35-6,811.61

Finding the Fourth Proportional to 12,400.25, 17,112.35 and 6,811.61

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Solution

The fourth proportional to 12,400.25, 17,112.35 and 6,811.61 is: 9,400.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.25 : 17,112.35 = 6,811.61 : x
  2. Step 2: Convert to fraction form
    12,400.25/17,112.35 = 6,811.61/x
  3. Step 3: Cross multiply
    12,400.25x = 17,112.35 × 6,811.61
  4. Step 4: Simplify right side
    12,400.25x = 116,562,620.33
  5. Step 5: Solve for x
    x = 116,562,620.33/12,400.25
  6. Step 6: Final answer
    x = 9,400.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.